Magnetic properties and magnetocrystalline anisotropy of Nd2Fe17, Nd2Fe17X3, and related compounds

Tribhuwan Pandey; David S. Parker

doi:10.1038/s41598-018-21969-8

Magnetic properties and magnetocrystalline anisotropy of Nd₂Fe₁₇, Nd₂Fe₁₇X₃, and related compounds

Tribhuwan Pandey, David S. Parker

Materials Theory

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The electronic and magnetic properties of Nd₂Fe₁₇ and Nd₂Fe₁₇X₃ (X = C or N) compounds have been calculated using the first-principles density functional calculations. Among these, the nitrogen and carbon interstitial compounds exhibit all of the required properties such as a saturation moment of 1.6 T, Curie temperature of 700-750 K, however easy magnetic axis lies in the planar direction making them less attractive for permanent magnet applications. The calculated magnetocrystalline anisotropy energy is found to be -2.7 MJ/m³ for Nd₂Fe₁₇C₃ and -4.7 MJ/m³ for Nd₂Fe₁₇N₃. We further explored the possibility of changing the easy axis direction through La/Ce alloying at Nd site. Although the MAE is found to be smaller in magnitude for all the La/Ce alloys it still maintains planar direction.

Original language	English
Article number	3601
Journal	Scientific Reports
Volume	8
Issue number	1
DOIs	https://doi.org/10.1038/s41598-018-21969-8
State	Published - Dec 1 2018

Funding

This research was supported by the Critical Materials Institute, an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office.

Funders	Funder number
Critical Materials Institute
U.S. Department of Energy
Advanced Manufacturing Office
Office of Energy Efficiency and Renewable Energy

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10.1038/s41598-018-21969-8

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Magnetic properties and magnetocrystalline anisotropy of Nd₂Fe₁₇, Nd₂Fe₁₇X₃, and related compounds

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